Got the 565 last weekend but haven't really used it for video yet, just played the one SACD that I have so far....LOL.
It will be difficult for me to compare as the players will be in different rooms. The 717 will remain on my rear projection and the 565 will be used for audio. May use it for video on the new plasma though Haven't decided yet.
I did once think about replacing the 717 but would have bought something more top end to replace it.
The 565 also has size on its side and one of the other reasons for getting it, fits into the hifi rack quite nicely. The only video I did try off it did look pretty good and that was via S-Video but couldn't offer a direct comparison.